The document, besides celebrating the achievements and victories of the CCP in 100 years, appears to have been devised to counter two allegations, which mightily disturb President Xi Jinping. The first, which comes from Western media and some Western scholars, is that the CCP is no longer Marxist. The second, which is more present within China but also scares some foreign investors, is that the CCP under Xi Jinping is becoming again too much Marxist, which may eventually damage Chinese economy and the value of foreign investments.
The most interesting parts of the document are those answering these two allegations. The text reiterates what Xi Jinping emphasizes every week: that the CCP is Marxist, Communist, and Leninist, and that those who raise doubts about it lie.